1<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 2<!--NewPage--> 3<HTML> 4<HEAD> 5<!-- Generated by javadoc (build 1.5.0) on Thu May 15 17:17:31 EDT 2008 --> 6<TITLE> 7MutexStats (Oracle - Berkeley DB Java API) 8</TITLE> 9 10<META NAME="keywords" CONTENT="com.sleepycat.db.MutexStats class"> 11 12<LINK REL ="stylesheet" TYPE="text/css" HREF="../../../style.css" TITLE="Style"> 13 14<SCRIPT type="text/javascript"> 15function windowTitle() 16{ 17 parent.document.title="MutexStats (Oracle - Berkeley DB Java API)"; 18} 19</SCRIPT> 20<NOSCRIPT> 21</NOSCRIPT> 22 23</HEAD> 24 25<BODY BGCOLOR="white" onload="windowTitle();"> 26 27 28<!-- ========= START OF TOP NAVBAR ======= --> 29<A NAME="navbar_top"><!-- --></A> 30<A HREF="#skip-navbar_top" title="Skip navigation links"></A> 31<TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""> 32<TR> 33<TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> 34<A 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document.writeln('<A HREF="../../../allclasses-noframe.html"><B>All Classes</B></A>'); 64 } 65 //--> 66</SCRIPT> 67<NOSCRIPT> 68 <A HREF="../../../allclasses-noframe.html"><B>All Classes</B></A> 69</NOSCRIPT> 70 71 72</FONT></TD> 73</TR> 74<TR> 75<TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> 76 SUMMARY: NESTED | FIELD | CONSTR | <A HREF="#method_summary">METHOD</A></FONT></TD> 77<TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> 78DETAIL: FIELD | CONSTR | <A HREF="#method_detail">METHOD</A></FONT></TD> 79</TR> 80</TABLE> 81<A NAME="skip-navbar_top"></A> 82<!-- ========= END OF TOP NAVBAR ========= --> 83 84<HR> 85<!-- ======== START OF CLASS DATA ======== --> 86<H2> 87<FONT SIZE="-1"> 88com.sleepycat.db</FONT> 89<BR> 90Class MutexStats</H2> 91<PRE> 92<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">java.lang.Object</A> 93 <IMG SRC="../../../resources/inherit.gif" ALT="extended by "><B>com.sleepycat.db.MutexStats</B> 94</PRE> 95<HR> 96<DL> 97<DT><PRE>public class <B>MutexStats</B><DT>extends <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A></DL> 98</PRE> 99 100<P> 101Statistics about mutexes in a Berkeley DB database environment, returned 102by <A HREF="../../../com/sleepycat/db/Environment.html#getMutexStats(com.sleepycat.db.StatsConfig)"><CODE>Environment.getMutexStats(com.sleepycat.db.StatsConfig)</CODE></A> 103<P> 104 105<P> 106<HR> 107 108<P> 109 110<!-- ========== METHOD SUMMARY =========== --> 111 112<A NAME="method_summary"><!-- --></A> 113<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> 114<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> 115<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"> 116<B>Method Summary</B></FONT></TH> 117</TR> 118<TR BGCOLOR="white" CLASS="TableRowColor"> 119<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> 120<CODE> int</CODE></FONT></TD> 121<TD><CODE><B><A HREF="../../../com/sleepycat/db/MutexStats.html#getMutexAlign()">getMutexAlign</A></B>()</CODE> 122 123<BR> 124 The mutex alignment, in bytes.</TD> 125</TR> 126<TR BGCOLOR="white" CLASS="TableRowColor"> 127<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> 128<CODE> int</CODE></FONT></TD> 129<TD><CODE><B><A HREF="../../../com/sleepycat/db/MutexStats.html#getMutexCount()">getMutexCount</A></B>()</CODE> 130 131<BR> 132 The total number of mutexes configured.</TD> 133</TR> 134<TR BGCOLOR="white" CLASS="TableRowColor"> 135<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> 136<CODE> int</CODE></FONT></TD> 137<TD><CODE><B><A HREF="../../../com/sleepycat/db/MutexStats.html#getMutexFree()">getMutexFree</A></B>()</CODE> 138 139<BR> 140 The number of mutexes currently available.</TD> 141</TR> 142<TR BGCOLOR="white" CLASS="TableRowColor"> 143<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> 144<CODE> int</CODE></FONT></TD> 145<TD><CODE><B><A HREF="../../../com/sleepycat/db/MutexStats.html#getMutexInuse()">getMutexInuse</A></B>()</CODE> 146 147<BR> 148 The number of mutexes currently in use.</TD> 149</TR> 150<TR BGCOLOR="white" CLASS="TableRowColor"> 151<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> 152<CODE> int</CODE></FONT></TD> 153<TD><CODE><B><A HREF="../../../com/sleepycat/db/MutexStats.html#getMutexInuseMax()">getMutexInuseMax</A></B>()</CODE> 154 155<BR> 156 The maximum number of mutexes ever in use.</TD> 157</TR> 158<TR BGCOLOR="white" CLASS="TableRowColor"> 159<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> 160<CODE> int</CODE></FONT></TD> 161<TD><CODE><B><A HREF="../../../com/sleepycat/db/MutexStats.html#getMutexTasSpins()">getMutexTasSpins</A></B>()</CODE> 162 163<BR> 164 The number of times test-and-set mutexes will spin without blocking.</TD> 165</TR> 166<TR BGCOLOR="white" CLASS="TableRowColor"> 167<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> 168<CODE> int</CODE></FONT></TD> 169<TD><CODE><B><A HREF="../../../com/sleepycat/db/MutexStats.html#getRegionNowait()">getRegionNowait</A></B>()</CODE> 170 171<BR> 172 The number of times that a thread of control was able to obtain 173 the mutex region mutex without waiting.</TD> 174</TR> 175<TR BGCOLOR="white" CLASS="TableRowColor"> 176<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> 177<CODE> int</CODE></FONT></TD> 178<TD><CODE><B><A HREF="../../../com/sleepycat/db/MutexStats.html#getRegionWait()">getRegionWait</A></B>()</CODE> 179 180<BR> 181 The number of times that a thread of control was forced to wait before 182 obtaining the mutex region mutex.</TD> 183</TR> 184<TR BGCOLOR="white" CLASS="TableRowColor"> 185<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> 186<CODE> int</CODE></FONT></TD> 187<TD><CODE><B><A HREF="../../../com/sleepycat/db/MutexStats.html#getRegSize()">getRegSize</A></B>()</CODE> 188 189<BR> 190 The size of the mutex region, in bytes.</TD> 191</TR> 192<TR BGCOLOR="white" CLASS="TableRowColor"> 193<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> 194<CODE> <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A></CODE></FONT></TD> 195<TD><CODE><B><A HREF="../../../com/sleepycat/db/MutexStats.html#toString()">toString</A></B>()</CODE> 196 197<BR> 198 For convenience, the MutexStats class has a toString method that lists 199 all the data fields.</TD> 200</TR> 201</TABLE> 202 <A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A> 203<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> 204<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"> 205<TH ALIGN="left"><B>Methods inherited from class java.lang.<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A></B></TH> 206</TR> 207<TR BGCOLOR="white" CLASS="TableRowColor"> 208<TD><CODE><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#clone()" title="class or interface in java.lang">clone</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#equals(java.lang.Object)" title="class or interface in java.lang">equals</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#finalize()" title="class or interface in java.lang">finalize</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#getClass()" title="class or interface in java.lang">getClass</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#hashCode()" title="class or interface in java.lang">hashCode</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#notify()" title="class or interface in java.lang">notify</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#notifyAll()" title="class or interface in java.lang">notifyAll</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#wait()" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#wait(long)" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#wait(long, int)" title="class or interface in java.lang">wait</A></CODE></TD> 209</TR> 210</TABLE> 211 212<P> 213 214<!-- ============ METHOD DETAIL ========== --> 215 216<A NAME="method_detail"><!-- --></A> 217<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> 218<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> 219<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2"> 220<B>Method Detail</B></FONT></TH> 221</TR> 222</TABLE> 223 224<A NAME="getMutexAlign()"><!-- --></A><H3> 225getMutexAlign</H3> 226<PRE> 227public int <B>getMutexAlign</B>()</PRE> 228<DL> 229<DD>The mutex alignment, in bytes. 230<P> 231<DD><DL> 232</DL> 233</DD> 234</DL> 235<HR> 236 237<A NAME="getMutexTasSpins()"><!-- --></A><H3> 238getMutexTasSpins</H3> 239<PRE> 240public int <B>getMutexTasSpins</B>()</PRE> 241<DL> 242<DD>The number of times test-and-set mutexes will spin without blocking. 243<P> 244<DD><DL> 245</DL> 246</DD> 247</DL> 248<HR> 249 250<A NAME="getMutexCount()"><!-- --></A><H3> 251getMutexCount</H3> 252<PRE> 253public int <B>getMutexCount</B>()</PRE> 254<DL> 255<DD>The total number of mutexes configured. 256<P> 257<DD><DL> 258</DL> 259</DD> 260</DL> 261<HR> 262 263<A NAME="getMutexFree()"><!-- --></A><H3> 264getMutexFree</H3> 265<PRE> 266public int <B>getMutexFree</B>()</PRE> 267<DL> 268<DD>The number of mutexes currently available. 269<P> 270<DD><DL> 271</DL> 272</DD> 273</DL> 274<HR> 275 276<A NAME="getMutexInuse()"><!-- --></A><H3> 277getMutexInuse</H3> 278<PRE> 279public int <B>getMutexInuse</B>()</PRE> 280<DL> 281<DD>The number of mutexes currently in use. 282<P> 283<DD><DL> 284</DL> 285</DD> 286</DL> 287<HR> 288 289<A NAME="getMutexInuseMax()"><!-- --></A><H3> 290getMutexInuseMax</H3> 291<PRE> 292public int <B>getMutexInuseMax</B>()</PRE> 293<DL> 294<DD>The maximum number of mutexes ever in use. 295<P> 296<DD><DL> 297</DL> 298</DD> 299</DL> 300<HR> 301 302<A NAME="getRegionWait()"><!-- --></A><H3> 303getRegionWait</H3> 304<PRE> 305public int <B>getRegionWait</B>()</PRE> 306<DL> 307<DD>The number of times that a thread of control was forced to wait before 308 obtaining the mutex region mutex. 309<P> 310<DD><DL> 311</DL> 312</DD> 313</DL> 314<HR> 315 316<A NAME="getRegionNowait()"><!-- --></A><H3> 317getRegionNowait</H3> 318<PRE> 319public int <B>getRegionNowait</B>()</PRE> 320<DL> 321<DD>The number of times that a thread of control was able to obtain 322 the mutex region mutex without waiting. 323<P> 324<DD><DL> 325</DL> 326</DD> 327</DL> 328<HR> 329 330<A NAME="getRegSize()"><!-- --></A><H3> 331getRegSize</H3> 332<PRE> 333public int <B>getRegSize</B>()</PRE> 334<DL> 335<DD>The size of the mutex region, in bytes. 336<P> 337<DD><DL> 338</DL> 339</DD> 340</DL> 341<HR> 342 343<A NAME="toString()"><!-- --></A><H3> 344toString</H3> 345<PRE> 346public <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> <B>toString</B>()</PRE> 347<DL> 348<DD>For convenience, the MutexStats class has a toString method that lists 349 all the data fields. 350<P> 351<DD><DL> 352<DT><B>Overrides:</B><DD><CODE><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#toString()" title="class or interface in java.lang">toString</A></CODE> in class <CODE><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A></CODE></DL> 353</DD> 354<DD><DL> 355</DL> 356</DD> 357</DL> 358<!-- ========= END OF CLASS DATA ========= --> 359<HR> 360 361 362<!-- ======= START OF BOTTOM NAVBAR ====== --> 363<A NAME="navbar_bottom"><!-- --></A> 364<A HREF="#skip-navbar_bottom" 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